Person from Des Moines (5)
I believe the answer is:
iowan
'person from des moines' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iowan that I've seen before include "From one US state" , "Midwesterner" , "US resident" , "One from Des Moines perhaps" , "From a US state, capital Des Moines" .)